1、Designation: F2792 091Standard Terminology forAdditive Manufacturing Technologies1,2This standard is issued under the fixed designation F2792; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEFootnote 2 was added editorially in February 2010.1. Scope1.1 This terminology includes terms, definitions of terms,descriptions of terms, nomenclature,
3、and acronyms associatedwith additive-manufacturing (AM) technologies in an effort tostandardize terminology used by AM users, producers, re-searchers, educators, press/media and others.NOTE 1The subcommittee responsible for this standard will reviewdefinitions on a three-year basis to determine if t
4、he definition is stillaccurate as stated. Revisions will be made when determined to benecessary.2. Referenced Documents2.1 ISO Standard:3ISO 10303 -1:1994 Industrial automation systems and inte-gration - Product data representation and exchange - Part1: Overview and fundamental principles3. Signific
5、ance and Use3.1 The definitions of the terms presented in this standardwere created by this subcommittee. This standard does notpurport to address safety concerns associated with the use ofAM technologies. It is the responsibility of the user of thisstandard to establish appropriate safety and healt
6、h practicesand determine the applicability of regulatory limitations priorto use of additive manufacturing.4. Terminology4.1 Definitions:additive manufacturing (AM), nprocess of joining materi-als to make objects from 3D model data, usually layer uponlayer, as opposed to subtractive manufacturing me
7、thodolo-gies. Synonyms: additive fabrication, additive processes,additive techniques, additive layer manufacturing, layermanufacturing, and freeform fabrication.additive systems, nmachines used for additive manufactur-ing.direct metal laser sintering (DMLSt), nuse of lasersintering to make metal par
8、ts directly from metal powderswithout intermediate “green” or “brown” parts; term denotesmetal-based laser sintering systems from EOS GmbH -Electro Optical Systems. Synonym: direct metal laser melt-ing.facet, ntypically a three- or four-sided polygon that repre-sents an element of a 3D polygonal mes
9、h surface or model;triangular facets are used in STL files.fused deposition modeling (FDMt), nmaking of thermo-plastic parts through heated extrusion and deposition ofmaterials layer by layer; term denotes machines built byStratasys, Inc.prototype tooling, nmolds, dies, and other devices used toprod
10、uce prototypes; sometimes referred to as bridge toolingor soft tooling.rapid prototyping, nadditive manufacturing of a design,often iterative, for form, fit, or functional testing, or combi-nation thereof.rapid tooling, nthe use of additive manufacturing to maketools or tooling quickly, either direc
11、tly, by making parts thatserve as the actual tools or tooling components, such as moldinserts, or indirectly, by producing patterns that are, in turn,used in a secondary process to produce the actual tools.rapid tooling, nin machining processes, the production oftools or tooling quickly by subtracti
12、ve manufacturing meth-ods, such as CNC milling, etc.reverse engineering, nin additive manufacturing, method ofcreating a digital representation from a physical object todefine its shape, dimensions, and internal and externalfeatures.selective laser sintering (SLSt), ndenotes the LS processand machin
13、es from 3D Systems Corporation.1This terminology is under the jurisdiction of Committee F42 on AdditiveManufacturing Technologies and is the direct responsibility of SubcommitteeF42.91 on Terminology.Current edition approved Sept. 15, 2009. Published October 2009. DOI:10.1520/F2792-09.2Through a mut
14、ual agreement with ASTM International (ASTM), the Society ofManufacturing Engineers (SME) contributed the technical expertise of its RTAMCommunity members to ASTM to be used as the technical foundation for thisASTM standard. SME and its membership continue to play an active role inproviding technica
15、l guidance to the ASTM standards development process.3Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=205791Copyright ASTM In
16、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.stereolithography (SL), nprocess used to produce partsfrom photopolymer materials in a liquid state using one ormore lasers to selectively cure to a predetermined thicknessand harden the material into sh
17、ape layer upon layer.stereolithography apparatus (SLAt), ndenotes the SLmachines from 3D Systems Corporation.subtractive manufacturing, nmaking objects by removingof material (for example, milling, drilling, grinding, carving,etc.) from a bulk solid to leave a desired shape, as opposedto additive ma
18、nufacturing.surface model, nmathematical or digital representation ofan object as a set of planar or curved surfaces, or both, thatmay or may not represent a closed volume.DISCUSSIONMay consist of Bezier B-spline surfaces or NURBSsurfaces. A surface model may also consist of a mesh of polygons, such
19、as triangles, although this approach approximates the exact shape of themodel.tool, tooling, nmold, die, or other device used in variousmanufacturing and fabricating processes such as plasticinjection molding, thermoforming, blow molding, vacuumcasting, die casting, sheet metal stamping, hydroformin
20、g,forging, composite lay-up tools, machining and assemblyfixtures, etc.3D printer, nmachine used for 3D printing.3D scanning, nmethod of acquiring the shape and size of anobject as a 3-dimensional representation by recording x,y,zcoordinates on the objects surface and through software thecollection
21、of points is converted into digital data.DISCUSSIONTypical methods use some amount of automation,coupled with a touch probe, optical sensor, or other device. Synonym:3D digitizing.4.2 Acronyms:CAD, nComputer-Aided Design. The use of computers forthe design of real or virtual objects.CAM, nComputer-A
22、ided Manufacturing. Typically refers tosystems that use surface data to drive CNC machines, suchas digitally-driven mills and lathes, to produce parts, molds,and dies.CNC, nComputer Numerical Control. Computerized controlof machines for manufacturing.DISCUSSIONCommon CNC machines include mills, lath
23、es, grinders,and flame, laser, and water-jet cutters.IGES, nInitial Graphics Exchange Specification, a platformneutral CAD data exchange format intended for exchange ofproduct geometry and geometry annotation information;IGES version 5.3 was superseded by ISO 10303, STEP in2006.DISCUSSIONIGES is the
24、 common name for a United States NationalBureau of Standards standard NBSIR 80-1978, Digital Representationfor Communication of Product Definition Data, which was approved byANSI first as ANS Y14.26M-1981 and later as ANS USPRO/IPO-100-1996.PDES, nProduct Data Exchange Specification or ProductData E
25、xchange using STEP.DISCUSSIONoriginally a product data exchange specification devel-oped in the 1980s by the IGES/PDES Organization, a program of USProduct Data Association (USPRO), it was adopted as the basis for andsubsequently superseded by ISO 10303 STEP.STEP, nStandard for the Exchange of Produ
26、ct Model Data.DISCUSSIONThe common name for ISO 10303 that “provides arepresentation of product information, along with the necessary mecha-nisms and definitions to enable product data to be exchanged. Thestandard applies to the representation of product information, includ-ing components and assemb
27、lies; the exchange of product data, includ-ing storing, transferring, accessing, and archiving.”STL, nin additive manufacturing, file format for 3D modeldata used by machines to build physical parts; STL is the defacto standard interface for additive manufacturing systems.STL originated from the ter
28、m stereolithography.DISCUSSIONThe STL format, in binary and ASCII forms, usestriangular facets to approximate the shape of an object. The format liststhe vertices, ordered by the right-hand rule, and unit normals of thetriangles, and excludes CAD model attributes.5. Keywords5.1 additive manufacturin
29、g; rapid prototyping; 3D printingBIBLIOGRAPHY(1) Wohlers Report 2009; http:/ (2) Castle Island; http:/ International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determ
30、ination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or w
31、ithdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that
32、your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (s
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